US8425254B2 - Electrical connector with ferrite block assembly - Google Patents

Electrical connector with ferrite block assembly Download PDF

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Publication number
US8425254B2
US8425254B2 US11/725,938 US72593807A US8425254B2 US 8425254 B2 US8425254 B2 US 8425254B2 US 72593807 A US72593807 A US 72593807A US 8425254 B2 US8425254 B2 US 8425254B2
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electrical
ferrite
conductor
ferrite block
passages
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US11/725,938
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US20080233801A1 (en
Inventor
Richard A. Johannes
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Aptiv Technologies Ltd
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FCI Automotive Holding SAS
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Assigned to FCI AMERICAS TECHNOLOGY, INC. reassignment FCI AMERICAS TECHNOLOGY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JOHANNES, RICHARD A.
Priority to US11/725,938 priority Critical patent/US8425254B2/en
Priority to PCT/US2008/003380 priority patent/WO2008115412A1/en
Priority to CN200880008812A priority patent/CN101636882A/zh
Publication of US20080233801A1 publication Critical patent/US20080233801A1/en
Assigned to FCI AMERICAS TECHNOLOGY LLC reassignment FCI AMERICAS TECHNOLOGY LLC CONVERSION TO LLC Assignors: FCI AMERICAS TECHNOLOGY, INC.
Assigned to FCI AUTOMOTIVE HOLDING reassignment FCI AUTOMOTIVE HOLDING ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FCI AMERICAS TECHNOLOGY LLC
Assigned to BANC OF AMERICA SECURITIES LIMITED, AS SECURITY AGENT reassignment BANC OF AMERICA SECURITIES LIMITED, AS SECURITY AGENT SECURITY AGREEMENT Assignors: FCI AUTOMOTIVE HOLDING SAS
Assigned to FCI AUTOMOTIVE HOLDING SAS reassignment FCI AUTOMOTIVE HOLDING SAS RELEASE OF PATENT SECURITY INTEREST AT REEL/FRAME NO. 26956/0814 Assignors: BANC OF AMERICA SECURITIES LIMITED
Assigned to DELPHI TECHNOLOGIES OPERATIONS LUXEMBOURG S.A.R.L. reassignment DELPHI TECHNOLOGIES OPERATIONS LUXEMBOURG S.A.R.L. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FCI AUTOMOTIVE HOLDING SAS
Publication of US8425254B2 publication Critical patent/US8425254B2/en
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Assigned to DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG, S.A.R.L. reassignment DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG, S.A.R.L. CORRECTIVE ASSIGNMENT; REEL/FRAME: 030302/O763; CORRECTED ASSIGNEE Assignors: FCI AUTOMOTIVE HOLDING SAS
Assigned to APTIV TECHNOLOGIES LIMITED reassignment APTIV TECHNOLOGIES LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Delphi International Operations Luxembourg SARL
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7193—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with ferrite filters

Definitions

  • the present invention relates to an electrical connector and, more particularly, to an electrical connector having a ferrite block assembly.
  • U.S. Pat. No. 5,213,522 discloses electrical connectors with ferrite blocks; one of the ferrite blocks having connector pin slots. Ferrite blocks are used in squib electrical connectors as described in U.S. Pat. Nos. 6,152,775 and 6,234,843 for example which are hereby incorporated by reference in their entireties. There is a desire to improve assembly of squib electrical connectors to allow for faster assembly.
  • a filtering ferrite block assembly for squib system electrical conductors including a first ferrite block including first conductor channels; and a second ferrite block including second conductor channels.
  • the second ferrite block is adapted to be connected to the first ferrite block with portions of the electrical conductors therebetween.
  • the electrical conductors extend through the first and second conductor channels between the two ferrite blocks.
  • an electrical connector comprising a housing comprising a main section and a cover; electrical contacts connected to the housing; and a ferrite block assembly connected to the housing.
  • the ferrite block assembly comprises two ferrite block members adapted to surround portions of electrical conductors connected to the electrical contacts. The portions of the electrical conductors are located between the ferrite block members. A first one of the ferrite block members is connected to the main section and a second one of the ferrite block members is connected to the cover.
  • a method of assembling an electrical connector comprising providing a first subassembly comprising a housing main section and a first ferrite block member; positioning electrical conductors in first conductor channels of the first ferrite block member; positioning a second ferrite block member onto the first ferrite block member to surround portions of the electrical conductors by the first and second ferrite block members; and connecting a housing cover to the housing main section to retain the first and second ferrite block members together.
  • FIG. 1 is a perspective view of an electrical connector incorporating features of the present invention attached to an air bag gas generator;
  • FIG. 2 is a cross-sectional view of the connector shown in FIG. 1 ;
  • FIG. 3 is a cross-sectional view of the electrical connector shown in FIG. 1 ;
  • FIG. 4 is a schematic view illustrating location of the ferrite block assembly with the housing members of the connector shown in FIG. 1 ;
  • FIG. 5 is a perspective view of the ferrite block assembly shown in FIGS. 2 and 4 ;
  • FIG. 6 is a perspective view showing how the ferrite blocks are connected to each other with the electrical conductors and terminals;
  • FIG. 7 is a chart showing decibels versus frequency of a connector not having a ferrite block
  • FIG. 8 is a chart as in FIG. 7 showing decibels versus frequency of a connector having the ferrite block assembly shown in FIG. 5 ;
  • FIG. 9 is a chart as in FIG. 8 showing decibels versus frequency of a connector having the ferrite block assembly shown in FIG. 5 as a unitary member rather than two members;
  • FIG. 10 is an end view of an alternate embodiment of the filter assembly.
  • FIG. 1 there is shown a perspective view of an exemplary electrical connector 10 , incorporating features of the present invention, shown attached to an air bag gas generator 12 .
  • the connector 10 could be attached to any suitable type of gas generator or, to any other type of electrical or electronic component.
  • the present invention will be described with reference to the exemplary embodiment shown in the drawings, it should be understood that the present invention can be embodied in many alternate forms of embodiments.
  • any suitable size, shape or type of elements or materials could be used.
  • the connector 10 in this embodiment, is for use in connecting electrical conductors 14 , 15 with an initiator 37 in the air bag gas generator 12 .
  • the connector 10 generally comprises a housing 16 , electrical contact terminals 18 and a filter assembly 20 (see FIG. 2 ).
  • EMI electromagnetic interference
  • the connector 10 can provide an enhanced EMI suppression capability.
  • the housing 16 comprises a first housing piece or main section 22 and a second housing piece or cover 24 .
  • the two housing pieces are preferably comprised of molded plastic or polymer material. However, in alternate embodiments, any suitable material(s) could be used. In an alternate embodiment, the housing could be comprised of more or less than two housing pieces.
  • the first housing piece 22 includes two cantilevered finger actuatable deflectable latches 26 , two separate receiving areas 28 , and two holes 30 through a bottom face 32 of the housing into the receiving areas 28 .
  • the latches 26 might not be provided.
  • any suitable type of latching system could be provided.
  • the housing 16 at the bottom of the front section 34 , is adapted to be plugged into a socket 36 of the initiator 37 of the gas generator 12 .
  • the latches 26 are adapted to latch with latch surfaces in the socket 36 .
  • additional connector position assurance means (not shown) can be provided to prevent the connector 10 from accidentally being disengaged from the gas generator 12 .
  • the second housing piece 24 is preferably snap lock mounted onto the first housing piece 22 after the contacts 18 and filter assembly 20 are located in the receiving areas 28 .
  • any suitable type of connection could be provided.
  • other types of housings or housing components could be provided.
  • the electrical contact terminals 18 each comprise a first connection section 38 , a second female connection section 39 , and a positioning section 40 .
  • Each first connection section 38 forms a wire connection section for one of the wires 14 , 15 .
  • the terminals 18 could comprise additional sections or sections which are shaped differently from the shapes shown in the drawings.
  • the contact terminals 18 are comprised of stamped and formed sheet metal.
  • the contact terminals could be comprised of any suitable material(s) and/or could be formed by any suitable contact manufacturing process.
  • the filter assembly 20 comprises a ferrite block assembly.
  • the ferrite block assembly is comprised of electrically non-conductive ferrite oxide.
  • the ferrite block assembly has a general rectangular box shape with two parallel side-by-side holes 50 passing therethrough from a front to a rear of the block.
  • the holes 50 have a general cross-sectionally circular shape along the length of the block.
  • the ferrite block assembly 20 comprises two ferrite blocks 42 , 44 .
  • the two ferrite blocks 42 , 44 are mirror images of each other. However, in alternate embodiments they could be different.
  • Each ferrite block 42 , 44 has two generally semi-circular channels 46 along one side between its front and rear ends 52 , 54 .
  • the top block 44 is positioned on top of the bottom block 42 with the channels 46 aligning with each other to form the two holes 50 .
  • FIG. 4 shows the general location of the ferrite block assembly 20 in the housing.
  • the bottom block 42 is mounted to the main section 22 .
  • the top block 44 is preferably mounted to the cover 24 .
  • the cover could merely function to retain the top block 44 against the bottom block 42 after the top block 44 is positioned against the top side of the bottom block 42 .
  • portions of the wires 14 , 15 and/or terminals 18 are positioned in the conductor channels 46 of the bottom block 42 .
  • the top block 44 is then positioned on top of the bottom block 42 and the portions of the wires 14 , 15 and/or terminals 18 .
  • the positioning of the block 42 , 44 relative to each other described above could automatically occur when the cover 24 is attached to the main section 22 .
  • the semi-circular cross section of the channels 46 cause the blocks 42 , 44 to matingly seat against a generally circular cross section of the electrical conductors 14 , 15 .
  • the method of assembling an electrical connector can be provided comprising providing a first subassembly comprising the housing main section 22 and a first ferrite block member 42 ; positioning electrical conductors 14 , 15 in first conductor channels 46 of the first ferrite block member 42 ; positioning a second ferrite block member 44 onto the first ferrite block member 42 to surround portions of the electrical conductors 14 , 15 by the first and second ferrite block members 42 , 44 ; and connecting a housing cover 24 to the housing main section 22 to retain the first and second ferrite block members 42 , 44 together.
  • the second ferrite block member can be provided attached to the housing cover 24 , wherein connecting the housing cover 24 to the housing main section 22 positions the second ferrite block member 44 onto the first ferrite block member 42 .
  • FIGS. 7-9 charts showing decibels versus frequency of different connectors are shown.
  • FIG. 7 shows test results from the connector 10 without the ferrite block assembly 20 installed. This establishes a base-line chart. Point 1 represents ⁇ 8.7729 dB at 500 MHz.
  • FIG. 8 shows test results from the connector 10 with the ferrite block assembly 20 installed. Point 1 represents ⁇ 32.097 dB at 500 MHz.
  • FIG. 9 shows test results from the connector 10 with a monolithic ferrite block installed which has the same dimensions and materials as the block assembly 20 . Point 1 represents ⁇ 34.847 dB at 500 MHz.
  • ferrite As seen in comparing the charts, it has been discovered that providing the ferrite as two split ferrite members 42 , 44 rather than a single monolithic ferrite block can still provide about the same qualities. Thus, it has been discovered that a multi-piece ferrite block assembly can be used rather than a single ferrite block.
  • the multi-piece ferrite block members can be cut from a single ferrite block or formed separately.
  • the ferrite block assembly 20 can be provided at the junction of the wires 14 , 15 with the terminals 18 if desired.
  • the housing main section 22 and first ferrite block 42 can be provided as a first sub-assembly and the housing cover 24 and second ferrite block 44 can be provided as a second sub-assembly if desired.
  • more than two ferrite blocks could form the ferrite block assembly and they could be comprised of different materials.
  • This invention also allows easy access and removal of the terminals 18 and wires 14 , 15 from the ferrite block assembly 20 when the cover 24 is opened, such as for repair of the connector or re-use of the ferrite block assembly in another connector.
  • the housing members 22 , 24 preferably retain the ferrite blocks 42 , 44 together in an assembly.
  • the ferrite blocks could be fixedly attached to each other by additional or alternative means, such as electrically conductive adhesive for example.
  • a filter assembly 60 is shown which can be used in an electrical connector in place of the filter assembly 20 .
  • the filter assembly 60 generally comprises a ferrite member 62 , an electrical cover conductor 64 and an electrical insulator 66 .
  • the ferrite member 62 has a general “M” shape with two wire conductor passages 68 , a center spacer 70 , and two side walls 72 .
  • the insulator 66 is located on a top side of the electrical cover conductor 64 at the open bottom sides of the passages 68 . Thus, the insulator 66 can electrically insulate wire conductors in the passages 68 from the electrical cover conductor 64 .
  • the insulator is preferably permanently attached to top side of the conductor 64 , but could be a severable member or merely located (and perhaps captured) between the ferrite member 62 and the conductor 64 .
  • the ferrite member 62 can be electrically coupled to the conductor 64 such that the conductor 64 can function as a ground, and the assembly 60 function as a filtering capacitor for the wire conductors.
  • the wire conductors can be placed on the insulator 66 in a side-by-side orientation, and then the filter member 62 is merely placed on top of the wire conductors with the wire conductors being received in the passages 68 .
  • the ferrite member 62 can be electrically connected to the conductor 64 .
  • the conductor 64 could be connected to one of the wire conductors as part of the grounding circuit, but is preferably connected to a separate ground circuit. It should be noted that use of terms such as “top” and “bottom” are merely used for reference, and should not be considered as limiting.
  • the cover of the connector housing can be attached to the base of the connector housing to hold the assembly 60 and wire conductors together.
  • additional or alternative means for holding the components of the assembly 60 together could be used.
  • the ferrite member 62 could have a shape other than an M shape so long as the passages 68 have open non-end sides to pass the wire conductors through, and the electrical cover conductor has a suitable shape to subsequently close those open non-end sides.
  • the ferrite member 62 could have an S shape.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US11/725,938 2007-03-19 2007-03-19 Electrical connector with ferrite block assembly Active 2030-03-25 US8425254B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US11/725,938 US8425254B2 (en) 2007-03-19 2007-03-19 Electrical connector with ferrite block assembly
PCT/US2008/003380 WO2008115412A1 (en) 2007-03-19 2008-03-14 Electrical connector with ferrite block assembly
CN200880008812A CN101636882A (zh) 2007-03-19 2008-03-14 具有铁氧体块组件的电连接器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/725,938 US8425254B2 (en) 2007-03-19 2007-03-19 Electrical connector with ferrite block assembly

Publications (2)

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US20080233801A1 US20080233801A1 (en) 2008-09-25
US8425254B2 true US8425254B2 (en) 2013-04-23

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US (1) US8425254B2 (zh)
CN (1) CN101636882A (zh)
WO (1) WO2008115412A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100059414A1 (en) * 2008-07-24 2010-03-11 The Trustees Of Princeton University Bump array device having asymmetric gaps for segregation of particles
US10850276B2 (en) 2017-02-24 2020-12-01 VisuGen Global LLC Systems and methods for capture and detection of low copy targets from large sample volumes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130097169A (ko) * 2010-07-29 2013-09-02 델파이 커넥션 시스템즈 홀딩 프랑스 전기 회로 및 상기 전기 회로의 제조 방법

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992060A (en) * 1989-06-28 1991-02-12 Greentree Technologies, Inc. Apparataus and method for reducing radio frequency noise
JPH0521113A (ja) 1991-07-15 1993-01-29 Fujitsu Ltd コネクタカバー
US5213522A (en) 1991-07-19 1993-05-25 Mitsubishi Materials Corporation Connector with built-in filter
JPH09161899A (ja) 1995-11-30 1997-06-20 Hosiden Corp 雑音除去電源ケーブルコネクタ
JPH10144407A (ja) 1996-11-15 1998-05-29 Nec Corp フラットケーブル用コネクタ
US5895282A (en) 1996-05-24 1999-04-20 Thomas & Betts Corporation Connector for airbag gas generator
US6089917A (en) * 1997-10-24 2000-07-18 International Business Machines Corporation Method and system for circuit board common mode noise suppression utilizing ferrous cores
US6152775A (en) 1998-12-07 2000-11-28 Framatome Connectors Interlock, Inc. Filtered electrical connector with multiple ferrite members
US6234843B1 (en) 1998-12-07 2001-05-22 Framatome Connectors Interlock Inc. Low profile filter connector with ferrite
US6283794B1 (en) 1999-04-08 2001-09-04 Framatome Connectors International Connector for electrical fuse ignition device
JP2002033153A (ja) 2000-04-25 2002-01-31 Thomas & Betts Corp <T&B> プラグコネクタ
US6435894B2 (en) 1998-07-15 2002-08-20 Tyco Electronics Logistics Ag Connector for airbag gas generator
JP2003249308A (ja) 2002-02-25 2003-09-05 Tyco Electronics Amp Kk 電気コネクタ組立体
US6663411B2 (en) 1998-07-15 2003-12-16 Tyco Electronics Logistics Ag Clamshell connector for airbag gas generator
US6663413B2 (en) 2000-05-22 2003-12-16 Framatome Connectors International Connector, particularly for airbag ignition systems
US6799999B2 (en) 2003-02-07 2004-10-05 Fci Americas Technology, Inc. Filtered electrical connector
US6942523B2 (en) * 2002-06-28 2005-09-13 Amphenol-Tuchel Electronics Gmbh Filtered electrical connector with ferrite block combinations and filter assembly therefor
US20050280484A1 (en) 2004-06-17 2005-12-22 Fci Americas Technology, Inc. Electrical filter assembly having IDC connection
US7121892B2 (en) 2003-07-23 2006-10-17 Fci Americas Technology, Inc. Electrical connector contact

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992060A (en) * 1989-06-28 1991-02-12 Greentree Technologies, Inc. Apparataus and method for reducing radio frequency noise
JPH0521113A (ja) 1991-07-15 1993-01-29 Fujitsu Ltd コネクタカバー
US5213522A (en) 1991-07-19 1993-05-25 Mitsubishi Materials Corporation Connector with built-in filter
JPH09161899A (ja) 1995-11-30 1997-06-20 Hosiden Corp 雑音除去電源ケーブルコネクタ
US5895282A (en) 1996-05-24 1999-04-20 Thomas & Betts Corporation Connector for airbag gas generator
JPH10144407A (ja) 1996-11-15 1998-05-29 Nec Corp フラットケーブル用コネクタ
US6089917A (en) * 1997-10-24 2000-07-18 International Business Machines Corporation Method and system for circuit board common mode noise suppression utilizing ferrous cores
US6663411B2 (en) 1998-07-15 2003-12-16 Tyco Electronics Logistics Ag Clamshell connector for airbag gas generator
US6435894B2 (en) 1998-07-15 2002-08-20 Tyco Electronics Logistics Ag Connector for airbag gas generator
US6152775A (en) 1998-12-07 2000-11-28 Framatome Connectors Interlock, Inc. Filtered electrical connector with multiple ferrite members
US6234843B1 (en) 1998-12-07 2001-05-22 Framatome Connectors Interlock Inc. Low profile filter connector with ferrite
US6283794B1 (en) 1999-04-08 2001-09-04 Framatome Connectors International Connector for electrical fuse ignition device
JP2002033153A (ja) 2000-04-25 2002-01-31 Thomas & Betts Corp <T&B> プラグコネクタ
US6663413B2 (en) 2000-05-22 2003-12-16 Framatome Connectors International Connector, particularly for airbag ignition systems
JP2003249308A (ja) 2002-02-25 2003-09-05 Tyco Electronics Amp Kk 電気コネクタ組立体
US6743051B2 (en) 2002-02-25 2004-06-01 Tyco Electronics Amp K.K. Electrical connector assembly
US6942523B2 (en) * 2002-06-28 2005-09-13 Amphenol-Tuchel Electronics Gmbh Filtered electrical connector with ferrite block combinations and filter assembly therefor
US6799999B2 (en) 2003-02-07 2004-10-05 Fci Americas Technology, Inc. Filtered electrical connector
US7121892B2 (en) 2003-07-23 2006-10-17 Fci Americas Technology, Inc. Electrical connector contact
US20050280484A1 (en) 2004-06-17 2005-12-22 Fci Americas Technology, Inc. Electrical filter assembly having IDC connection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100059414A1 (en) * 2008-07-24 2010-03-11 The Trustees Of Princeton University Bump array device having asymmetric gaps for segregation of particles
US8783467B2 (en) 2008-07-24 2014-07-22 The Trustees Of Princeton University Bump array device having asymmetric gaps for segregation of particles
US10850276B2 (en) 2017-02-24 2020-12-01 VisuGen Global LLC Systems and methods for capture and detection of low copy targets from large sample volumes

Also Published As

Publication number Publication date
CN101636882A (zh) 2010-01-27
WO2008115412A1 (en) 2008-09-25
US20080233801A1 (en) 2008-09-25

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